Individual numbers, Jan. 1915-Apr. 1921 called Journal
Includes 4 supplementary no., June-Dec. 1914, with title: Journal
Issues for 1945-51 accompanied by War emergency issues (1950-51 called W.E.P.) which constitute alternate vols. of the Proceedings, v. 153-165
Beginning with 1963/64 (v. 178) divided into 3 series: pt. 1, General proceedings; pt. 2A, Automobile Division proceedings, and pt. 3, proceedings of conferences